浆砌块石、浆砌卵石防渗允许最大渗漏量均为0.10~0.25m3/(㎡?d)。
A. 正确
B. 错误
劳动关系包含了一切与雇佣行为相关的社会现象,具体表现为()。
A. 工资报酬的集体谈判
B. 劳资纠纷
C. 实施执行劳动合同
D. 劳动争议
Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by().
A. authorized fire equipment servicing personnel only
B. replacing the propellent cartridge and refilling with powder
C. puncturing the cartridge seal after installation
D. recharging the cartridge and refilling it with powder
佛焰花序属于肉穗花序,如马蹄莲的花序,外有一枚佛焰状的苞片。
A. 正确
B. 错误